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Vehicle positioning method and device

A vehicle positioning and vehicle technology, which is applied to measurement devices, vehicle components, vehicle wireless communication services, etc., and can solve problems such as inaccurate positioning and weak signal.

Pending Publication Date: 2020-12-01
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a vehicle positioning method and device, which are used to solve the problem of inaccurate positioning when the vehicle passes through a road section where the GNSS signal is weak or even GNSS does not exist

Method used

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  • Vehicle positioning method and device
  • Vehicle positioning method and device

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] like figure 1 As shown, it is a schematic diagram of a system architecture provided by an embodiment of the present invention, and the system includes a vehicle 110 and a roadside node 120 . Wherein, the vehicle 110 may include a GNSS component 1101 , a V2X wireless component 1102 , an inertial measurement unit 1103 , and a CPU and vehicle interface 1104 . The roadside node 120 may include a V2X base station 1201 , a millimeter ...

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PUM

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Abstract

The invention provides a vehicle positioning method and device. A vehicle receives first position calibration information sent by a roadside node; wherein the first position calibration information comprises a passing time point and a passing speed when the vehicle passes through a first preset position; after the vehicle determines that the GNSS signal cannot be detected, at least one piece of first acceleration information is acquired from the passing time point to the current time point; wherein the first acceleration information is collected by an inertial measurement unit of the vehicle;and the vehicle calibrates the position information of the vehicle according to the first position calibration information and the at least one piece of first acceleration information. According to the mode, the passing time point and the passing speed in the first position calibration information sent to the to-be-positioned vehicle by the roadside node are accurate; therefore, when the vehicle receives the position calibration information, the vehicle can adjust the position of the vehicle at the current moment by calling the acceleration information from the passing time point to the current time point, and the accuracy can reach the sub-meter level.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wireless communication, and in particular, to a vehicle positioning method and device. Background technique [0002] In the current field of Internet of Vehicles and autonomous driving, a car needs to obtain its own precise location at the current moment, and perform location judgment to identify its position on the map. Then, through Dedicated Short Range Communication (DSRC), Long-Term Evolution Vehicle Networking (Long Term Evolution Vehicle to Everything, LTE-V2X) and other wireless protocols inform other surrounding vehicles of the location of the vehicle to achieve the purpose of safety warning. [0003] In an open scene, you can use the Global Navigation Satellite System (GNSS), such as the Global Positioning System (GPS) and Beidou, to obtain sub-meter positioning by using differential positioning technology. However, during the actual driving process, the vehicle may encoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/40G01C21/16G01S13/86G01S13/931G01S19/47
CPCH04W4/025H04W4/027H04W4/023H04W4/40G01S19/47G01S13/931G01S13/86G01C21/165
Inventor 陈建祥
Owner RUIJIE NETWORKS CO LTD